Which device provides electrical energy to run an electric circuit

Answers

Answer 1

Answer: The battery provides electrical energy to run an electric circuit

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I don't understand how to find the frequency and period of wavelengths. Can anyone help me?

Answers

Frequency of a wave =

   (speed of the wave) divided by (wavelength)
or
   (1) divided by (period of the wave) .

Period of the wave =

   (wavelength) divided by (speed of the wave)
or
   (1) divided by (frequency of the wave) .

Why are frying pans usually made out of metal?

Answers

We need heat to cook food. So, frying pans need to be a good conductor of heat. Since, metals are good (best) conductor of heat, frying pans are made out of metals.

Frying pans see usually made out of metal because metal is a great conductor of heat. The food can then cook faster. Why is metal a good conductor? it is because the molecules are tightly packed together, allowing the heat to travel through quickly

A source of wave produces 20 crest sand 20 troughs in 0.4 sec. Find the frequency of the wave.

Answers

1 whole wave is 1 crest and 1 trough.

20 crests and 20 troughs is 20 whole waves.

20 waves / 0.4 seconds = 50 waves per second.

Frequency = 50 Hz

You adjust the temperature so that a sound wave travels more quickly through the air. You increase the temperature from 30 degrees c to 36 degrees c. what is the velocity if the sound wave at this new temperature?

Answers

To calculate the velocity of the sound wave, we use this formula:
V = 331 + [0.6*T],
Where V is the velocity and T represents temperature.
When the temperature is 36 degree Celsius, we have
V = 331 + [0.6 * 36]
V = 331 + 21.6 = 352.6
Therefore, V = 352.6 m/s.

352.6 m/s just took the test

Each element is made up of only one kind of_________

Answers

Each element is made up of only one kind of atom.
Each element has their own atom.

each element is made up of one kind of ATOM

When the pressure at the bottom of a submerged object is _______than the pressure at the top of the submerged object a buoyant force is produced?THE ANSWER IS: GREATER THAN

Answers

greater is the keword here

When the pressure at the bottom of a submerged object is less than the pressure at the top of the submerged object a buoyant force is produced?

Other Questions

The borders of played never change.True or false

Sarah, who lives in Australia notices that the length of the shadow of the flagpole is getting shorter every day when measured at noon. Paul, who lives in Canada, notices that the length of the shadow of the flagpole is getting longer everyday when measured at noon.Explain how both students can be observing this at the same time. Include these in your explanation: Sun; earth; tilted axis; rotation and revolution.

The latent heat of fusion of alcohol is 50 kcal/kg and its melting point is -54oC. It has a specific heat of 0.60 in its liquid state. Calculate the energy needed to melt 2.0 kg of solid alcohol at -54o and raise it to a temperature of -4°C.40. kcal100 kcal160 kcal280 kcal

How does mass effect my room?